wannacry | a3c0ae3b078f2896377466f0d0296e862d886d09244344e72fec3016aa26285b

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
12/05/2024, 08:11

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General

Target
391de298f50072b0b6fc5857a12ff386_JaffaCakes118.dll
Size 5.0MB
Sample240512-j3hlssfh8x
SHA256 a3c0ae3b078f2896377466f0d0296e862d886d09244344e72fec3016aa26285b
MD5 391de298f50072b0b6fc5857a12ff386
SHA1 d46ddb14cd772292020b3fb96e195a0d8e9c85a4
SHA512 02f24c1cd6229608ab8695eea967e63726cf9d69b9fe6249d17013afee05bb17da444ecc25ac6c35de47c41a40d896986ce0369d951ceeaf2c65c2d805589c74
SSDEEP 49152:pnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA:9DqPoBhz1aRxcSUDk36SA
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3270) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Executes dropped EXE 3 IoCs

pid	Process
720	mssecsvc.exe
1652	mssecsvc.exe
1996	tasksche.exe

Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4136 wrote to memory of 8	4136	rundll32.exe	82
PID 4136 wrote to memory of 8	4136	rundll32.exe	82
PID 4136 wrote to memory of 8	4136	rundll32.exe	82
PID 8 wrote to memory of 720	8	rundll32.exe	83
PID 8 wrote to memory of 720	8	rundll32.exe	83
PID 8 wrote to memory of 720	8	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\391de298f50072b0b6fc5857a12ff386_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4136
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\391de298f50072b0b6fc5857a12ff386_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:8
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:720
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:1996

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1652

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 8959cb739e0a481a02a58abec28337bd4784565202f285462d139249528f0ad8
MD5 dcca9b252373d3bb50c77d4fc907ccc5
SHA1 c0c0f7c9556e0f1701ff5b9a85024a8465e6efe3
SHA512 e9130d89a34e319775db06642f6e29bfe89df28b00fc69864060114d8eb9538d3f4c1db7c9ad4c59e25c848a66ca983f641d5d9b973cbdc3b00fdffe2ba5c3d4
SSDEEP 49152:tnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA2:hDqPoBhz1aRxcSUDk36SAB
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 116af23f7b32a512fee8f982993005edc34cb973551b71fdb0c215b745f5b589
MD5 4010ed868053c1710ef899ba78a1b58e
SHA1 28ae50c078df192aea783cf011795d05ef4dbe54
SHA512 a80d0c83b36081f163394a559d3a0d2b468ddae87dd91f22b008197a54c142f17d751cb5f966c0b838b44c14294ab9fced79462b8b78a5cac109f7913a977413
SSDEEP 49152:nQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA+:QqPoBhz1aRxcSUDk36SAx
MD5 SHA1 SHA512 SSDEEP

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memory/720-4-0x0000000000400000-0x0000000000A72000-memory.dmp

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memory/720-10-0x0000000000400000-0x0000000000A72000-memory.dmp

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memory/1652-6-0x0000000000400000-0x0000000000A72000-memory.dmp

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Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads